Home / 120,979.44-166,997.97-80,678.43

Finding the Fourth Proportional to 120,979.44, 166,997.97 and 80,678.43

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Solution

The fourth proportional to 120,979.44, 166,997.97 and 80,678.43 is: 111,367.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,979.44 : 166,997.97 = 80,678.43 : x
  2. Step 2: Convert to fraction form
    120,979.44/166,997.97 = 80,678.43/x
  3. Step 3: Cross multiply
    120,979.44x = 166,997.97 × 80,678.43
  4. Step 4: Simplify right side
    120,979.44x = 13,473,134,032.79
  5. Step 5: Solve for x
    x = 13,473,134,032.79/120,979.44
  6. Step 6: Final answer
    x = 111,367.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.